Office (OLE) / .DOCX malware analysis — malicious · cacec73fe0b1a846

MALICIOUS

Office (OLE) / .DOCX

161.4 KB Created: 2020-09-23 12:48:00 Authoring application: Microsoft Office Word

MD5: 1fbf14d76c8487ecd98cdb0511695fd3 SHA-1: ffd6e792171bb5c64eaf6e389289edf609a11a48 SHA-256: cacec73fe0b1a846ce5db5b68df9944399d4e815914863904d301d1eacbbfc81

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open and p-code auto-exec firings. The CreateObject call suggests the macro is likely used to download and execute a second-stage payload. ClamAV detection further confirms its malicious nature as a downloader. No specific family could be identified.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9765533-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9765533-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b40b6439e0e94acfcf6292a727f89f3b7b0e2a6faeddd230541e1164d0603753`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19346 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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